Hydroquinone Photo Grade 99.5% Min CAS NO.:123-31-9

  • CasNo:123-31-9
  • Molecular Formula:C6H6O2
  • Purity:99.5% MIN
  • Molecular Weight:
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Product Details

Product: hydroquinone Photo grade (widely used in food and cosmetics)

 

Usage: Can be used as intermediates of polymer, monomer inhibitor, dyes and auxiliary; as antioxidant in food and medicine industry; as anti coagulant for gas; developer for film, photos and X-ray film.

 

Specification:          

                           

Index items

Index  (%)

Appearance

White needle crystal

Hydroquinone(HOC6H4OH) content

99.0~101.0

Melting point

171°C~175°C

Solubility

Qualified

Residue on ignition                     ≤

0.05

Heavy Metal(based on Pb)         ≤

0.002

Iron(Fe)                                        ≤

0.002

 

Advantage of our product(Comparison table):

 

SUPPLIERS

ZENVA SINO

SOME OTHER HQ PRODUCER

PRODUCTION PROCESS

ANILINE

PHENYL HYDROXIDE

QUALITY

Not containing pyrocatechin and

the purity is higher than that of

product made from phenyl

hydroxide;

not containing dioxin.

Containing pyrocatechin because

of the incapable complete separation of pyrocatechin and hydroquinone; 

containing of dioxin.

USAGE

Can be used in cosmetic and food additives, also used in industrial area, such as rubber antioxidant.

Mainly used in industrial area, such as rubber antioxidant;

Can not be used in cosmetic and

food.